Register for pumps.



W. G. PRITGHARD.

REGISTER FOR PUMPS. 7 APPLICATION FILED 11:13.13, 1911.

11027,.151. Patente ad May 21,1912.

may? gm INVENTOR I 1111mm OPriTh d I c cu"- WITNESSES ATTORNEY UNITEDSTATES PATENT onnroa.

WILLIAMC. PRITCHARD, OF LANCASTER, PENNSYLVANIA.

anexs'rnn roa humps.

Specification of Letters Patent.

Application filed February 13, 1911. Serial No. 609,267.

measuring, and which are employed for dispensing liquids, such as oil orgasolene; and the invention relates more particularly to the registeringmechanism employed to record the quantity of liquid drawn during eachsale.

The objects of the invention are to provide a registering mechanism thatshall be cheap, durable and eflicient, and that shall not only registerthe quantity delivered by the pump upon each stroke, but automaticallyalarm or give warning to the operator when a prearranged quantity shallhave been recorded.

Another object is to. provide a simple device whereby the registeringmechanism may be reset to its normal position of zero from any positionwithin its scope of registration.

Still another object of the invention is to provide a device of thisclass that will be capable of attachment to any styleof pump having amovable piston and means for attaching the device thereto.

With these and other objects in view, my

invention consists in certain construction and combination of parts aswill hereinafter be fully described and claimed and illustrated in theaccompanying -drawings,-which form a partof this application, and inwhich like figures of reference refer to corresponding parts in all ofthe views; but it is fully understood that while I have here describedmy invention as shown, that I do not confine myself to the exact design,as slight changes may be made in the construction and arrangement of theseveral parts without departing from the spirit of the invention.

Inthe drawings :Figure 1, is a'perspec- .tive view of a dispensing pump,embodyihg my invention. .Fig. 2,-is a detail rear View of theregistering device in connection w th the operating mechanism, attachedto the Patented. May 21, 1912.

cured a rack-bar'4;-while the lower end of the piston rod 3, is attachedto and operates the usual suction cylinder in the tank (notillustrated). The piston rod 3, is reciprocated in a vertical manner bythe handcrank 5, which rotates a )inion (not shown) in mesh with saidrackar 4. The outlet pipe 2, may be provided with a suitable valve orhose connection 6. Mounted in a suitable position, adjacent to thepiston rod 3, is a computing or indicating chart 7, which may be dividedand subdividedin any suitable manner; while secured to said piston rod3, or to said rack-bar 4, is an index finger or pointer 8, which extendsacross the face of the chart 7, and is adapted to travel up and downover the face of the chart 7, as actuated by the piston rod.

Attached to the pump frame 9, and adjacent tothe top of the chart 7 ismounted my novel automatic register 10, which comprises a frame orcasing 11, provided with an attaching base 12, and a central hub or boss13, to one side of which" is attached by the pivot screw 14,there'movable cover plate 15; and to the other end of said hub 13, issecured by the screw 16, a gong or bell 17 Mounted within the frame orcasing 11, in a freely rotatable manner upon the pivot screw 14, is aratchet wheel 18, which is provided with a hub 19, around which iswrapped a tension spring 20, having one of its ends secured to saidratchet wheel 18, and the other end to said frame or casing 11, in" sucha manner, that as said ratchet wheel-18, is rotated within the casing11,

the spring tension will be increased until the further revolution ofsaid ratchet wheel 18, is prevented by a suitable stop. To the 'faceofsaid ratchet wheel 18, is attached a dial 21, which is provided with aseries of v suitable numerals or characters indicating the quantity ofliquid drawn by each stroke of the piston 3, from the tank; said numereals 1 or characters being exposed to view, through an opening 22, in theremovable cover plate 15.

In the construction herewith illustrated, the ratchet wheel 18,isprovided with a. se-

ries of teeth or notches 23, of even and regu w lar length to correspondto every numeral on the dial 21, from and including I, to and includingthe numeral for indicating the largest quantity, and one short tooth 24,to correspond to the numeral'indicating zero; said short tooth 24, beingso placed with relation to the highestnumeral on the dial, that whensaid numeral has been reached said short tooth 24, will not extendsufliclently' to be engaged by the actuating pawl 25, which is mountedin an adjustable manner on the rack-bar 4; but said short tooth 24,

is of suflicient length to be engagedby the locking pawl 26, as theratchet wheel 18, is being rotated by the downward stroke of therack-bar 4, and piston rod 3.

The automatic alarm mechanism comprises the gong or bell 17, which issecured by the screw 16, to the hub 13, of the frame 11; a strikinghammer 27, mounted on a resilient arm 28,. secured by the clamp 29, tosaid frame 11. Said hammer 2' 7, being provided with a slotted arm 30,engaged by a stud 31, on a pivoted arm 32, which arm projects through aslot 33, formed in said frame 11; said pivoted arm 32, being oper- 28,by a lug 34, projecting from the side of ated against the tension of thehammer arm the ratchet wheel, and so positioned as to engage said arm30, and draw back-the hammer 27, just before, and release thev same whenthe largest numeral is reached by the revolution of the ratchet wheelthe release of the arm 32, being accomplished by the lug 34, passingthereover, as the arm 32, travels in an arc of shorter radius than thatof the lug 34;"said lug 34, alsoafter passing the arm 32,'engagesastopon the frame 11,

and prevents further movement of the ratchet wheel 18, in thatdirection.

The registering or ratchet wheel 18, is

operated only uponthe downward stroke of v the piston 3, and when theliquid has been discharged from the cylinder; and to, rotate saidratchet wheel 18, .the pawl 25,; ispivoted upon the upper end of'therackbar 4,

and provided wlth an adjustment screw- 35,

and lock nut" 36; '25, upon the downward stroke of the rack-bar 4, engaging a tooth of the ratchet wheellS, through an opening in the side ofthe case, and upon its upward stroke passing over said teeth.

mounted upon the frame 11, insuch a position that it engages the teethof the ratchet wheel 18, and prevents backward movement of said wheeluntil released by pressing downward on the'finger lever 37, which isintegral therewith, when the ratchet wheel 7 18, will return to. zero asactuated by the tension spring 20.

Referring to Fig. 2, it will be seen that when the ratchet wheel 18, hasbeen rotated by the action of the piston 3, and pawl 25, to register thehighest number, the short tooth 24, will be ina position whereby itcannot be engaged by the pawl 25, and thus the piston 3, can be operatedindependently of, the registering mechanism until the ratchet wheel 18,is returned to zero, so that if the operator disregards the warningofthe gong, there will be no damage done by the operation of the pump.

As shown in Fig. l, of the drawings, there is a computing scale or chart7, of the usual form attached in connection with an indieating finger 8,secured to the rack-bar 4,

for indicating the price per gallon, etc.; I

said chart being divided as desired.

In operation, the. register is always brought to zero, and upon eachdownward stroke of the piston, the-total number of. the, quantities ofeach stroke of the piston is.

registered. Thus it will be seen that the quantity of liquid drawn willbe clearly shown and a correct register secured, thereby avoiding errorsof the salesman in charging for the product.

The device is especially in filling automobile tanks, which is readilyaccomplished by connecting a hose tothe outlet nozzle and running thesame to the vehicle;

and as before stated, the register will clearly show the quantity. I

Having thus described my invention what I claim'as new and desire tosecure by Letters Patent is-:'

In a device of the characterdescribed, the combination with a pumppisto'nrod, a register adjacent thereto, a supporting frame therefor, apawl pivot-ed upon said piston In testimony-whereofl affix my signaturerod and adapted to operate said register at in presence of twowitnesses.

the finish of the discharging stroke of said piston rod, one end of saidpivoted pawl adapted to contact with said frame upon the return strokeof said piston to release said means from said register.

WILLIAM G. PRITCHARD.

Witnesses I. G. ARNOLD,

.'JOHN J. THOMPSON.

